Is it recommended to back-flush my 1995 Mazda B2300 2.3 cooling system, or

I

iliuealo

New member
might doing so cause holes to open? I have the Prestone "Flush 'N Fill kit". I was going to back-flush the cooling system myself and use the "Prestone Super Radiator Cleaner" to get all the rust out of my cooling system. Is this recommended, or could it either 1. cause any holes which are being blocked by sediment to open up and make the coolant start leaking or 2. cause a premature problem with cooling system leaks or even thin the walls inside the engine separating coolant from oil?

Any advice you can recommend is highly appreciated, my cooling system has never leaked before and is not leaking now.

Thanks
telarknhansum, what if the antifreeze i'm about to add is already prediluted 50/50 with water/antifreeze? What's the distilled water for?

Thanks you guys!
 
I personally would not do it only because of the reasons you have given .
You could remove the radiator hose from the bottom and flush it with tap water , then with distilled water. Add Distilled water to the Pre-stone coolant .
 
how do u know if there are any holes in the system? replacing coolant should not create a leak unless there is a problem. i would suggest look for any seepage before replacement which can give u some clue or past leaks. or do a pressure test to find any leaks if not sure.
 
You don't have to worry about opening the cooling system anywhere near the crankcase or crankcase oil. The block and cylinder head cooling passages are at least 1/4" - 5/16 at it's thinnest point. There's a slight chance you may clean enough sediment (corrosion & rust) out of the heater core or radiator cooling tubes to uncover a leak.

I've used the Prestone flushing T in the heater core return line along with the Super Radiator Cleaner many times as directed on the bottles. I've never opened up a radiator or heater core. You must understand a 15 year old radiator doesn't owe you a nickel. It could have some suprises particularly if the coolant haden't been changed regularly. Look at it this way: Maximum cooling system cleaning is done with granular and liquid acid made particularly for nasty cooling systems. You're taking a safe "middle of the road" approach.
 
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